脱毒菜籽饼粕的物性及其干燥性能的研究  

Studies on the Physical and Drying Properties of Detoxicated Rapeseed Meal(DRM)

作　　者：郭子军 饶应昌[2] 

机构地区：[1]广东南海岭南机械厂 [2]华中农业大学农工系

出　　处：《农业工程学报》1994年第1期95-102,共8页Transactions of the Chinese Society of Agricultural Engineering

摘　　要：脱毒菜籽饼粕含水率高、粘性较大,其干燥过程生产能力低、能耗高。该文通过对脱毒菜籽饼粕的流动特性、热特性和干燥特性等的试验研究,为其干燥工艺、储存条件的参数选择和干燥设备的设计、使用提供依据。The heat and drying properties of Detoxicated Rapeseed Mill (DRM) and its fluidity as well were studied in the paper. The experiment of DRM fluidity shows that, at 30~60 C , DRM has the same fluidity as powder at the moisture content of less than 35 % , and as pseudo-plastic fluid when the moisture content is from -10% to 50%. the order of facters according to the importance of affecting the fluidity is shearing speed(r) ,then moisture content(m) ,and then temperature(t). Dr. Harper' s equation is suitable for DRM.Specific heat and thermal conductivity of DRM were determined by the mixed method and the static method respectively under different moisture contents. Equilibrium Moisture Content (EMC) was also determined at 20℃,35℃,50℃. The results indicate that modified -Hendreson' s model is suitable for both desorption EMC and adsorption EMC.Othmer' s method was used. Heat needed for water vaporization was calculated at different moisture contents. In addition,the drying properties of DRM on the fluid-bed and in the drying process with two stage hot air were tested. It shows that DRM is at a constant velocity of drying throughout the drying process. The stage of matter on the fluid-bed can be considered as the preparation of drying.

关 键 词：脱毒菜籽饼粕 物理性能 干燥性能 

分 类 号：S816.43[农业科学—饲料科学]